Kohler Whole House Generators: Models, Cost & Specs

Kohler whole house generator models and configurations

Kohler whole house generators span multiple residential sizes and configurations, so the exact model number matters. The product page presents the KOHLER 26RCA as a 26 kW residential generator. The official G4-315 sheet describes a multi-fuel 26RCA(L) family and separately lists single- and three-phase ratings. The figures below cover the single-phase 120/240 V configuration sold on the residential 26RCA product page. A three-phase model in the same document is not interchangeable with it.

The sheet is marked © 2026 and was checked with the current product page on October 4, 2026. Manufacturer documentation and configurations can change; check the exact model suffix, phase, voltage, fuel, and document supplied with any quote.

Verified 26RCA data

Values in the card below come from the current product page and official manufacturer specification sheet. These are published specifications, not measurements or tests performed by Standby Generator Guide.

Read sound figures with their test conditions

The 26RCA sheet lists 56 dB(A) during engine exercise and 67 dB(A) during full-speed diagnostics and normal operation, measured 23 feet from the generator set. It also says the listed result is the lowest of eight points measured around the set and that other measurement points may differ with installation. It is therefore not a universal perimeter reading or a promise about the sound at a neighbor’s property.

An exercise-mode reading is not comparable to a normal-operation reading. Compare the sound mode, load/state, measurement distance, and direction before treating two numbers as comparable.

Do not assume the ATS is included in every package

The official spec sheet states that the 26RCAL model package includes a 200 A service-entrance-rated Model RXT automatic transfer switch; the 26RCA generator set is also listed separately. The manufacturer pages checked October 4, 2026 show a $7,546 starting MSRP for the 26RCA configuration (ATS scope unresolved) and $8,515 starting MSRP for the ATS-inclusive 26RCAL package. The product pages say final pricing depends on dealer customization and installation type. The current 26RCA product table and RCA/RCAL FAQ conflict on ATS inclusion. Neither price is an installed quote; confirm exact equipment and scope in writing.

Ask the dealer to put the full model and ATS part number, switch rating, load-management equipment, fuel work, electrical work, permits, site work, startup, and warranty scope on the quote.

Warranty scope: use the document, not the headline

The 2026 official specification sheet describes a premium 5-year/2,000-hour limited standby warranty that covers parts, labor, and travel for the full warranty period. The current product page summarizes a five-year parts warranty and separately mentions dealer travel coverage. Because web summaries and warranty terms may differ in scope or conditions, read the linked warranty document for the exact model and serial number before purchase.

The manufacturer also states that its commercial-grade engines are tested for 2,000 hours of continuous operation and describes the enclosure as designed to withstand winds up to 181 mph. Those are manufacturer statements about its product; they are not independent durability testing, a 20-year service-life guarantee, or a field performance finding by this publication.

What to verify in a written quote

• Exact model suffix, phase, voltage, fuel, and output rating.
• Whether the quote is 26RCA generator-only or the 26RCAL package with the stated RXT ATS.
• Which circuits and motor starts the final design supports, including any load-management components.
• Fuel-supply capacity, pipe route/size, electrical route, permits, site preparation, inspections, startup, and commissioning.
• The applicable warranty document, covered costs, hours limit, registration requirements, and local service provider.

Generator capacity must be selected from actual loads and the installation conditions. Use our sizing guide as background, then have a qualified local professional assess the property.